package 课堂;

import java.util.Scanner;
public class classs {
	public static void main(String args[]) {
		int month;
		Scanner sc=new Scanner(System.in);

		month=sc.nextInt();
		switch(month){
		case 3:
		case 4:
		case 5:
			System.out.println("chunji");break;
		case 6:
		case 7:
		case 8:
			System.out.println("xiaji");break;
		case 9:
		case 10:
		case 11:
			System.out.println("qiuji");break;
		case 12:
		case 1:
		case 2:
			System.out.println("dongji");break;
		}
	}}

